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NVD / CVE Program· CNA Linux

CVE-2024-40968: MIPS: Octeon: Add PCIe link status check

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.29% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 1c33fd17383f48f679186c54df78542106deeaa0, 25998f5613159fe35920dbd484fcac7ea3ad0799, 29b83a64df3b42c88c0338696feb6fdcd7f1f3b7.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1c33fd17383f48f679186c54df78542106deeaa0, 25998f5613159fe35920dbd484fcac7ea3ad0799, 29b83a64df3b42c88c0338696feb6fdcd7f1f3b7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: MIPS: Octeon: Add PCIe link status check The standard PCIe configuration read-write interface is used to access the configuration space of the peripheral PCIe devices of the mips processor after the PCIe link surprise down, it can generate kernel panic caused by "Data bus error". So it is necessary to add PCIe link status check for system protection. When the PCIe link is down or in training, assigning a value of 0 to the configuration address can prevent read-write behavior to the configuration space of peripheral PCIe devices, thereby preventing kernel panic.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 12, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 22th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-40968

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 4.19.317
  • linux linux kernel4.20 and later · before 5.4.279
  • linux linux kernel5.5 and later · before 5.10.221
  • linux linux kernel5.11 and later · before 5.15.162
  • linux linux kernel5.16 and later · before 6.1.96
  • linux linux kernel6.2 and later · before 6.6.36
  • linux linux kernel6.7 and later · before 6.9.7

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.31affected
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before 6bff05aaa32c2f7e1f6e68e890876642159db419affected · git
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before 64845ac64819683ad5e51b668b2ed56ee3386aeeaffected · git
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before 6c1b9fe148a4e03bbfa234267ebb89f35285814aaffected · git
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before 25998f5613159fe35920dbd484fcac7ea3ad0799affected · git
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before d996deb80398a90dd3c03590e68dad543da87d62affected · git
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before 1c33fd17383f48f679186c54df78542106deeaa0affected · git
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before 38d647d509543e9434b3cc470b914348be271fe9affected · git
    • e8635b484f644c7873e6091f15330c49396f2cbc and later · before 29b83a64df3b42c88c0338696feb6fdcd7f1f3b7affected · git
    • before 2.6.31not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.99-16.1.99-1
Debian:13linuxbefore 6.9.7-16.9.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-40966Jul 12, 2024 · tty: add the option to have a tty reject a new ldisc
    22Monitor
  • ← EarlierCVE-2024-40967Jul 12, 2024 · serial: imx: Introduce timeout when waiting on transmitter empty
    22Monitor
  • Later →CVE-2024-40969Jul 12, 2024 · f2fs: don't set RO when shutting down f2fs
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1c33fd17383f48f679186c54df78542106deeaa0Vendor (CNA)
Linux Linux25998f5613159fe35920dbd484fcac7ea3ad0799Vendor (CNA)
Linux Linux29b83a64df3b42c88c0338696feb6fdcd7f1f3b7Vendor (CNA)
Linux Linux38d647d509543e9434b3cc470b914348be271fe9Vendor (CNA)
Linux Linux64845ac64819683ad5e51b668b2ed56ee3386aeeVendor (CNA)
Linux Linux6bff05aaa32c2f7e1f6e68e890876642159db419Vendor (CNA)
Linux Linux6c1b9fe148a4e03bbfa234267ebb89f35285814aVendor (CNA)
Linux Linuxd996deb80398a90dd3c03590e68dad543da87d62Vendor (CNA)
debian:linux6.1.99-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-39682420 days aparttls: fix handling of zero-length records on the rx_listKEV
    70This week
  • CVE-2024-4215918 days apartscsi: mpi3mr: Sanitise num_phys
    31Monitor
  • CVE-2024-4216018 days apartf2fs: check validation of fault attrs in f2fs_build_fault_attr()
    31Monitor
  • CVE-2024-4228436 days aparttipc: Return non-zero value from tipc_udp_addr2str() on error
    31Monitor
  • CVE-2024-47727101 days apartx86/tdx: Fix "in-kernel MMIO" check
    31Monitor
  • CVE-2021-47014135 days apartnet/sched: act_ct: fix wild memory access when clearing fragments
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-754 · Improper Check for Unusual or Exceptional Conditions

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records